An imbalance in cluster sizes does not lead to notable loss of power in cross-sectional, stepped-wedge cluster randomised trials with a continuous outcome.

Trials · 2017 · PMC5341460 · PMID 28270224

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a clear trendno p-value reported

However, there was a certain degree of noise surrounding the estimated powers from the simulations and so it was difficult to distinguish a clear trend.

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